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commandlinefu.com is the place to record those command-line gems that you return to again and again.

Delete that bloated snippets file you've been using and share your personal repository with the world.
That way others can gain from your CLI wisdom and you from theirs too. All commands can be commented on, discussed and
voted up or down.

Stay in the loop…

Follow the Tweets.

Every new command is wrapped in a tweet and posted
to Twitter. Following the stream is a great way of staying abreast of the latest commands. For the more discerning,
there are Twitter accounts for commands that get a minimum of 3 and 10 votes - that way only the great commands get tweeted.

It connects to XXX.XXX.XXX.XXX port YYY, using a source port of "srcport" and binds the tunnel on local port "locport". Then you can connect to localhost:locport.

With this command it's possible to connect to servers using a specific source port (useful when a firewall check the source port). Because of the connections starting from the same source port, this works well only for the first connection (for example, works well with SSH and bad with HTTP because of multiple requests).